Lg- ls991 unlock done but “invalid sim”

HELLO SIR

LG- LS991 UNLOCK DONE BUT "INVALID SIM"

LOG IS

Code:

Checking data...OK
Platform: LG Qualcomm
Selected port: COM189
Selected model: LS991
Reading info...
Model ID: LGLS991
IMEI: 357355-06-489960-9
Android version: 6.0
Battery level: 99%
Mode: Normal
Firmware compiled date: Oct 23 2015
Firmware compiled time: 17:00:00
Firmware released date: Nov 23 2015
Firmware released time: 20:09:17
SW Version: MPSS.BO.2.5.c3-00106-M8992FAAAANAZM-1
IMEI: 357355-06-489960-9
SPC: 362052
MEID: 35735506489960
Mobile ESN: 80409EF6
SSD_A: 0000000000000000
SSD_B: 0000000000000000
OTKSL: 566070
NAM Name: Sprint
User Lock Code: 8646
Sending unlock files...
Initializing ADB...OK
Waiting for phone...OKOK
Switching to Download mode...OK
Initializing flash...OK
Reading partition...OK
Creating Carrier backup...OK
Unlocking...OK
Phone successfully unlocked!
Performed by 2.2.8 software version.


IT IS ANDROID 6 VERSION
HOW TO SOLVED?